Type inference doesn't work with a Java class and a static property

@Grab(group='org.grails', module='grails-bootstrap', version='2.0.4')
import grails.util.Metadata
import groovy.transform.CompileStatic

@CompileStatic
def foo() {
   Metadata m = Metadata.current
}

[Static type checking] - Cannot assign value of type java.lang.Object to variable of type grails.util.Metadata
 at line: 7, column: 4

public static Metadata getCurrent() { ... }